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801113381 = 37157137909
BaseRepresentation
bin101111110000000…
…000010100100101
32001211102202221222
4233300000110211
53120041112011
6211254350125
725565231345
oct5760002445
92054382858
10801113381
11381231382
121a435b345
13c9c828b3
1478578d25
154a4e6ddb
hex2fc00525

801113381 has 8 divisors (see below), whose sum is σ = 828011640. Its totient is φ = 774491328.

The previous prime is 801113363. The next prime is 801113399. The reversal of 801113381 is 183311108.

It is an interprime number because it is at equal distance from previous prime (801113363) and next prime (801113399).

It can be written as a sum of positive squares in 4 ways, for example, as 112890625 + 688222756 = 10625^2 + 26234^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-801113381 is a prime.

It is a super-2 number, since 2×8011133812 = 1283565298434502322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 801113381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801113351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63146 + ... + 74763.

It is an arithmetic number, because the mean of its divisors is an integer number (103501455).

Almost surely, 2801113381 is an apocalyptic number.

It is an amenable number.

801113381 is a deficient number, since it is larger than the sum of its proper divisors (26898259).

801113381 is a wasteful number, since it uses less digits than its factorization.

801113381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138103.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 801113381 is about 28303.9463856191. The cubic root of 801113381 is about 928.7482218271.

Adding to 801113381 its reverse (183311108), we get a palindrome (984424489).

The spelling of 801113381 in words is "eight hundred one million, one hundred thirteen thousand, three hundred eighty-one".

Divisors: 1 37 157 5809 137909 5102633 21651713 801113381